The Argentine midfielder was by no means satisfied with Wednesday's scoreless draw at San Siro and feels the Blaugrana should have converted one of their many chances
The Catalans were unable to break down the Rossoneri defence in the first leg of their Champions League quarter-final tie at San Siro, and Mascherano admitted that the final result was hard to take for Barcelona.
"We played very well but when you have six or seven chances to score and you don't take them it's difficult to take. But that's football, and we have to look forward now," Mascherano was quoted as saying on the official Uefa website.
"We know how experienced they are. They have a lot of clever players so I think the next game will be the same because they defend so well.
"But we have a lot of players in attack that can put on a good show, score goals and win us the match. Obviously with all the Barcelona supporters behind us we will try everything to get through to the next round."
Barcelona resume domestic action on Saturday when they host Athletic Bilbao.